Use crystal ball (2016)¶

DAQ¶

Log into GSI as user ‘land’:
```
ssh -lland lx-pool.gsi.de
```
Go to the experimente directory:
```
cd /u/land/lynx.landexp/ikp/xbdaq
```

You will find the following:

r4l-43 - MBS macros for the LEFT of crystal ball - ctrl = 1 - crystals 82-162
r4l-59 - MBS macros for the RIGHT of crystal ball - ctrl = 2 - crystals 1-81
scripts - Scripts to set environment variables
unpacker - Main ucesb directory (contains e.g. empty unpacker)
upexps/xb2016 - Experiment specific unpacker
r3bfuser - Glue code between nurdlib and MBS
nurdlib - readout library
trloii - trigger logic library and tools
htools - Support library for nurdlib
unpacker - ???

There is a screen session on lxir123:
```
ssh -lland lxir123
```
Log into it:
```
screen -x xb
```

It has many windows:

r4l-43 - Logged into r4l-43 (for compiling / log files)
r4l-59 - Logged into r4l-59 (for log files)
lxir - Logged into lxir123 (for compiling)
devMbs - development
r4l-59ioc - EPICS server for r4l-59
r4l-19ioc - EPICS server for r4l-43
watch - EPICS watcher for both systems
pi - Logged into landpi001

DAQ control (conventional) To start the DAQ on each side of XB, do: In each of the windows r4l-43 / r4l-59:
```
> cd landexp/ikp/xbdaq/r4l-XX
> resl
> mbs
mbs> @s
```
In the conventional way you cannot use the EPICS watcher for the DAQ

DAQ control (via EPICS)

Note

This only works, if the EPICS servers are started (see below).

From a GSI machine (lx-pool might not work), do:

epicsfind
export EPICS_CA_ADDR_LIST="140.181.86.103 140.181.88.37"
caput -S R4L-10:setup_pwd /land/usr/land/landexp/ikp/xbdaq/r4l-43
caput R4L-10:dispatch_up 1
caput R4L-10:dispatch_send "r4l-43::@s"
caput -S R4L-29:setup_pwd /land/usr/land/landexp/ikp/xbdaq/r4l-59
caput R4L-29:dispatch_up 1
caput R4L-29:dispatch_send "r4l-59::@s"

This will start the DAQs using the EPICS control interface For resetting use:

caput R4L-10:reset_local 1
caput R4L-29:reset_local 1

To start EPICS servers (IOCs) Log into r4l-43 and r4l-59 and do:

cd bl/epics/mbs_ioc/iocBoot/iocmbs
./st.cmd

The servers on the raspberrypi (landpi001) are started automatically

Slow control (HV and MSCFs)¶

landpi001 runs the EPICS servers for both systems

HV:

cd epics/iseg_hv/scripts

Here are a couple of helper scripts:

all_on.sh                 - Switch all crystals ON (does not set voltage)
all_off.sh                - Switch all crystals OFF (does not reset voltage)
init.sh                   - Read a voltage list file (default: init_final.list)
                                    and apply the voltages listed there
single_on.sh <cr>         - Switch a single crystal on
single_off.sh <cr>        - Switch a single crystal off
read_settings.sh          - Read settings for all crystals
vset_single.sh <cr> <v>   - Set voltage v on crystal cr
vget_single.sh <cr>       - Read back set and measured voltage on crystal cr

Shaper modules (Mesytec MSCF-16):

cd epics/mrcc_ioc/script

You will also find helper scripts here:

read.sh <cmd> [<from> <to>]       - Read value of parameter <cmd>
set.sh <cmd> <mscf> <value>       - Set parameter <cmd> of <mscf> to <value>
read_cr.sh <cmd> <from> <to>      - Read parameter <cmd> from range of crystals
upd_settings.sh                   - Read all parameters from hardware
read_settings.sh                  - Show parameter values
mux_single.sh <cr>                - Put signal from crystal <cr> on the mux output

Note

One always has to upd_settings first, before read_settings. Otherwise the values are not read from the hardware, but only from the EPICS database. After setting a new value, the database is automatically updated.

Analysis¶

Streaming, unpacking and merging data

Unpacker/merger is in ~/lynx.landexp/ikp/xbdaq/upexps/xb2016

Set root environment:
```
rootfind
```

Streaming from a single crate:

./xb2016 stream://r4l-XX --output=/path/to/file.lmd

Unpacking from a single crate:

./xb2016 stream://r4l-XX --ntuple=RAW,/path/to/file.root

Merging data from two streams:

./xb2016_merger --merge=wr,2 stream://r4l-43 stream://r4l-59 --output=/file

Merging data and sending to second ucesb for unpacking:

./xb2016_merger --merge=wr,2 stream://r4l-43 stream://r4l-59 --output=- \
| ./xb2016 --file=- --ntuple=RAW,/path/to/rootfile

Merging data and serving on a local port:

./xb2016_merger --merge=wr,2 stream://r4l-43 stream://r4l-59 \
--server=stream:8000

Unpacking from a local server:

./xb2016 stream://localhost:8000 --ntuple=RAW,/file.lmd